PLANTATION, Fla. -

A 70-year-old man admitted to downloading child pornography despite knowing it was illegal, according to the Broward Sheriff's Office.

Deputies arrested James Brigham on Thursday. He is charged with 31 counts of possessing child pornography and 1 count of computer pornography.

Investigators tracked several files to Brigham's home IP address, according to an arrest report.

Brigham said he downloaded several files onto the computer in his office, according to an arrest report. Investigators found the files on a hidden drive and two CDs in his office.